MAINTENANCE FUNCTIONS - TM-5-4120-386-140255

TM 5-4120-386-14

B-2. MAINTENANCE FUNCTIONS (Continued).

ADJUST. To maintain or regulate, within prescribed limits, by bringing into proper

or exact position, or by setting the operating characteristics to specified

parameters.

ALINE. To adjust specified variable elements of an item to bring about optimum

or desired performance.

CALIBRATE. To determine and cause corrections to be made or to be adjusted on

instruments or test, measuring, and diagnostic equipment used in precision

measurement. Consists of comparisons of two instruments, one of which is a

certified standard of known accuracy, to detect and adjust any discrepancy in the

accuracy to the instrument being compared.

REM0VAL/INSTALL. To remove and install the same item when required to

perform service or other maintenance service or other maintenance functions,

Install may be the act of emplacing, seating, or fixing into position a spare, repair

part, or module (component or assembly) in a manner to allow the proper

functioning of an equipment or system.

REPLACE. To remove an unserviceable item and install a serviceable counterpart

in its place. "Replace" is authorized by the MAC and is shown as the 3rd position

of the SMR code.

REPAIR. The application of maintenance services, including fault

location/troubleshooting, removal/installation, and disassembly/assembly

procedures, and maintenance actions to identify troubles and restore serviceability

to an item by correcting specific damage, fault, malfunction, or failure in a part,

subassembly, module (component or assembly), end item, or system.

OVERHAUL. That maintenance effort (service/action) prescribed to restore an

item to a completely serviceable/operational condition as required by maintenance

standards in appropriate technical publications (i.e., DMWR). Overhaul is normally

the highest degree of maintenance performed by the Army. Overhaul does not

normally return an item to like new condition.

REBUILD. Consists of those services/actions necessary for the restoration of

unserviceable equipment to a like new condition in accordance with original

manufacturing standards. Rebuild is the highest degree of material maintenance

applied to Army equipment. The rebuild operation includes the act of returning to

zero those age requirements (hours/miles, etc.) considered in classifying Army

equipment/components.

B-2